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United States Patent | 6,230,055 |
Sun ,   et al. | May 8, 2001 |
An implantable cardioverter/defibrillator with antitachycardia pacing capability and method for operating same in which the detection zone boundary used to discriminate between tachycardia and fibrillation is adaptively adjusted based upon operating experience. Rate zones are provided for further classifying detected episodes of tachycardia and fibrillation according to the certainty of their being correctly identified based upon past operating experience. Adjustments of the rate zones and the fibrillation detection zone boundary are made based upon the results of antitachycardia pacing in attempting to terminate arrhythmic episodes.
Inventors: | Sun; Weimin (Plymouth, MN); Tze; Martin (Maplewood, MN); KenKnight; Bruce H. (Maple Grove, MN); Manicka; Yatheendhar (Woodbury, MN) |
Assignee: | Cardiac Pacemakers, Inc. (St. Paul, MN) |
Appl. No.: | 378591 |
Filed: | August 20, 1999 |
Current U.S. Class: | 607/5 |
Intern'l Class: | A61N 001/37 |
Field of Search: | 607/4,5,6,7,8,14 |
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Foreign Patent Documents | |||
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Olson, W., "Safety Margins for Sensing and Detection: Programming Tradeoffs", Implantable Cardioverter Defibrillator Therapy. The Engineering Clinical Interface (Developments in Cardiovascular Medicine, 188) By Mark W. Kroll & Michael H. Lehmann, Shepard & Epstein, 388-420, (1996). |